Abstract
The coal as fired, with unidentified characteristics of the coal gangue, was burned on a 300MW circulating fluidized bed unit. The equipment of the coal conveying system was damaged and the boiler operation was unstable. In response to the problems, the coal quality data and storage conditions of the coal were examined and the site was spot-checked to evaluate the coal quality characteristics. At the same time, the typical representative parameters of the coal handling system and boiler operation were selected. According to the analysis of coal quality and coal storage, the coal quality fluctuates greatly and the uniformity of particle size distribution is poor. There is actually the coal gangue with hard texture and hard to grind in the coal pile. The coal gangue will have adverse effects on the fine screening machine, fine crusher and other equipment. After burned this type of coal, the fluidized quality of the boiler bed is degraded to make an impact on the safe and stable operation of the boiler. It is recommended that the coal should be screened and then burned into the furnace to ensure safe and stable operation of the boiler.
Highlights
As one of the important development directions in the field of coal-fired power generation, the power generation technology of the circulating fluidized bed has developed its 300MW grade circulating fluidized bed unit after decades of development due to its wide fuel adaptability, strong load regulation and excellent environmental performance
The circulating fluidized bed unit burns the coal, and the particle sizes characteristics of the crushed coal are changed[13], which leads to an increase in the crushing power consumption of the crushing equipment in the coal conveying system[14], and may adversely affect the safety and economical operation of the circulating fluidized bed unit[15]
When the coal was unloaded for 17d, the iron mesh was sifted in the coal unloading grid of the train, and the large-size material in the coal were blocked from entering the coal conveying system by reducing the sieve diameter
Summary
As one of the important development directions in the field of coal-fired power generation, the power generation technology of the circulating fluidized bed has developed its 300MW grade circulating fluidized bed unit after decades of development due to its wide fuel adaptability, strong load regulation and excellent environmental performance. It has been widely used in domestic coal-fired power generation[1,2,3]. The influence of the coal gangue coal on the coal conveying system and the boiler operation of the circulating fluidized bed unit were mainly analyzed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
